Under the U.S. Toxic Substances Control Act (TSCA), the Environmental Protection Agency enforces time-limited protection for most Confidential Business Information (CBI) claims, which generally expire after 10 years. Companies must actively request an extension to maintain confidentiality; otherwise, the information may be disclosed publicly without further notice. Certain categories-such as specific manufacturing processes, customer or supplier identities, and detailed composition data-are exempt from expiration requirements. For all other claims, EPA determines expiration dates based on submission timelines, with special rules applying to chemical identity claims tied to the first submission after the 2016 amendments. EPA provides advance notification of expiring claims at least 60 days prior, including public listings and direct alerts via its Central Data Exchange (CDX). To extend protection, companies must submit substantiated requests at least 30 days before expiration, demonstrating continued need for confidentiality.
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